This car mount is very sturdy. It comes with a disc with adhesive that you stick onto the dashboard and the mount has a suction cup, which you put on the disc to attach it. It also comes with a clip, if you want to attach it to the vent. The cool thing about this mount, is that when you put the cable in the mount and the other end into a USB connector/lighter, the mount opens itself and when you put your phone in the holder, it closes till it fits your phone and it starts to charge while in the holder. It has a decent weight to it, but the mount is holding my Samsung phone perfectly.
Loving it so far and would recommend it, if you're looking for a good phone holder that also charges at the same time.